Casio WK-1200, Service Manual

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ELECTRICAL
Current drain with 12 V DC:
No sound output
430 mA
±
20 %
Maximum volume 1570 mA
±
20 %
with 24 keys from C4 to C6 pressed in Bassoon tone
Volume: maximum, Touch response: maximum
Reverb: Hall
Phone output level (Vrms with 8
Ω
load each channel):
with key A5 pressed in Bassoon tone L-ch 165 mV
±
20 %
Volume: maximum R-ch 150 mV
±
20 %
Reverb: Hall
Speaker output level (Vrms with 4
Ω
load each channel):
with key A5 pressed in Bassoon tone L-ch 5500 mV
±
20 %
Volume: maximum R-ch 5200 mV
±
20 %
Reverb: Hall
Output level (Vrms with 47 k
Ω
load each channel):
with key A5 pressed in Bassoon tone L-ch 4260 mV
±
20%
R-ch 3950 mV
±
20%
Minimum operating voltage: 6.3 V
About General MIDI
General MIDI standardizes MIDI data for all sound source types, regardless of manufacturer. General MIDI
specifies such factors as tone numbering, drum sounds, and available MIDI channels for all sound sources.
This standard makes it possible for all MIDI equipment to reproduce the same nuances when playing
General MIDI data, regardless of the manufacturer of the sound source.
This keyboard supports General MIDI, so it can be used to play commercially available pre-recorded
General MIDI data and General MIDI data send to it from a personal computer.
Terminals
MIDI terminals: IN, OUT
Assignable terminal: Standard jack (sustain, sostenuto, soft, rhythm start/stop)
Headphone/Output terminal: Stereo standard jack
Output Impedance: 200
Ω
Output Voltage: 4.9 V (RMS) MAX
Power supply terminal: 12 V DC
Power supply Dual power supply system
Batteries: Six D-size batteries
Battery life: Approximately 2 hours (UM-1/R20) 8 hours (AM-1/LR20)
AC adaptor: AD-12
Auto power off: Turns power off approximately six minutes after last key operation. En-
abled under battery power only, can be disabled manually.
Power consumption: 12 V --- 18 W
Speaker output: 5 W + 5 W
Dimensions (HWD): 116.2
×
42.1
×
14.7 cm (45-13/16
×
16-9/16
×
5-13/16 inches)
Weight: Approximately 9.1 kg (20.1 lbs) (without batteries)